Center selvage motion



Aug. 23, 1932. GORDON 1,872,935

CENTER SELVAGE MOTION Filed NOV. 12, 1928 2 Sheets-Sheet l /7 7TaiP/vEya Aug. 23, 1932. I A. A. GORD-ON 1,872,935

CENTER S ELVAGE MOTION Filed Nov. 12, 1928 2 Sheets-Sheet 2 Patented Aug. 23, 1932 WEED? re- BS PATsNtoFrics ALBERT A. GORDON, or wonons'rnn, Massnonusn'rrs',' essrenon fro ciaoiirrron &

" nownns Loom WORKS, or

raessaorwsn'rrs onn'rna sELvAen-Morron 1 Application filed Novemher 12,192 serial No. 31s,e1e.

.This invention relates to improvements in center selvage motions for looms and it is the general object of the inventionto provide such. a motion which will operatewith sets of needles moving in opposite directions and reciprocated vertically and displaced-laterally by a single driving unit.

hen weaving a comparatively narrow fabric on a relatively wide loom it. is customary to weave two fabrics side by side from the same warp and filling but separate .the same by a selvage motion .so that when out apart each fabric will have a selvage on both edges. In my prior Patent No. 936,41'5 I have shown'a center selvage motion which is opvertically reciprocating movements and also the lateral displacing movements- It is sometimes desirable to supply. certain of the warp threads which are to form the center selvage from small spools mounted above the usual warp and having their ends threaded through the eyes which eifectthe interlacing of the center warp threads. As heretofore made these spoolshave been relatively stationary so that they do not move downwardly with the needles. The result of this arrangement has been to change the path through which the selvage .warp threads traverse as they pass from the spools to the needles. In order to prevent this'variation in the length of the yarns it is a further object of my invention to provide thespools with a mounting which will move with the needles so that the path along'which'the yarn travels is substantially the same for all vertical positions of the needle. In this way the correct tension may be retained in the warp threads I supplied by the small spools.

invention,

wonons'rnn, messeorrosnrrs, a coerce-Arron or invention resides in the combinatio-nand arrangement of parts hereinafter described andset forth in the claims.

In the accompanying drawings wherein. a

convenientembodiment of my'invention is I set forth,

Fig. 1 is a transverse section throughthe central portion of a 100m provided with my Fig. 2 is'an enlarged front elevation in the direction of arrow 2,'Fig. 1, i

F 3 is an end elevation taken inthe die rectlon of arrow 3, Fig. 2,-certain parts being 7 shown in section for the sake ofclearness,

Figs. 4" and 5 are detailed horizontal; sec-, tions taken, respectively, on lines .44 and 5+5 ofFigS, g

Fig. 6 is a detailed horizontal section taken on line 6'6 of Fig. 2, Fig. 7 is a vertical section on. line 7'7 of Fig.1, V 3'- Fig. 8 is a detailed view. on an enlarged scale looking in the direction of arrow 8, gFig. 1, and showing the relation of the sets of needles afterjthey' have crossed,

Fig. 9 is a View similar to .a portion of 8 but with the sets of needles in the same position with respect to lateral displacement asshown in Fig. Sbutbefore said needles have been crossed to. define the shed,

Fig. 10 is'a view similar to Fig. 9 but with thesets of needles in a different position with respect to lateral displacement and with the sets crossing each other, i

Fig.

Fig. 11 is a detailed view looking in the: 'i

direction of arrow 11 Fig.. 1,.showing the upper end of thedriving rod which actuates the motion, and

Fig. 12 is a horizontal section on an enlarged scale takenon' line 12-'-.-,- 12 of Fig. 1.

Referring to-Fig. 1, I have shown a loomside 10 and a bottom shaft 11. which preferably rotates. onceevery other pick of the loom. The arch 12 extends across the'loom and may support at-substantially the central portionof the loom a bracket 13 in Wl ichis en I LC. 1) O secured for longitudinal horizontal adjustment a rod 14 held insaid bracket by screw To the forward end of said rod ldis-se i trol threads which are formedas part of the stance, the lower needles will of course retain the same vertical position due to the fact that the surface 35 in contact withthe rim 39 of cam 36 will limit upward movement thereof and as a result the pinion 2O as'it rises will raise the needles 47. I On the other hand, it it be desired to lower the needles e7, the rod 17 will be correspondingly lowered, the spring 42 being sufficiently strong to hold the lever in comparatively fixed position to require the pinion to move .the rack 49 downwardly. It is to be understood that the parts are shown in an extreme position in Fig. 3 to correspond with the, raised position of the lever 28 as shown in Fig. 1'.

As previously stated it is sometimes desired to support some of the center selvage warp on small'spools. In order to accomplishthis resultI provide the beari1ig' 50 with a rearwardly extending horn having a hub 61 from which project in substantially opposite directions two bearing rods 62. Each rod has mounted thereon a spool S which is held against a friction element'63 by a compression spring 64 and the latter maybe stressed by a nut 65. The warp threads W drawn from the spools S extend, downwardly through upper eyes E and lower eyes F, from whence they may be directed through the eyes 48 of the depending needles.

In order to prevent angular movement of the member 22 with respect to the rod 17 I provide said member with shoulders 66 which her 49. v 7

It is to be understood that the'warp slide along surfaces 54 onthe driven memthreads which co-operate'with the uppereyes '46 will usually be drawn fromthemain Warp U of the loom or some source-independent of the spools S, and it is further to'be unde stood that the depending needles 47 may conmain warp and are not necessarily fed with warp coming from the spool In fact under certain conditions the spools may be omitted.

to the position shown in Fig; 9, the lever 28' being controlled by a part of cam 36 intermediate the points. As the cam continues to rotate the lever 28 will move laterally by contact with inclined surface 37 a so as to cause the lower finger 45 to move to the right of the position which they occupied in Fig. 9. After the lateral displacement the needles will again pass each other as suggested in Fig.

10. The effect of this is to move the warp threads U first on one side and then on the other side of the warps W controlled by the needles 47. It will be seen from the construction'of cam 36 that there is a lateral displacement of the sets of needles withrespect to each other for each pick of the loom or for each flight of the shuttle so that the weaving efl'ect is the customary cross weaving.

' From the foregoing it will be 'seen thatI- have provided a selvage motion wherein there are employed two'sets of needles, the sets moving in opposite directions; It willjalso be seen that a single cam" and -cam lever are suflicient to give the lowerfset of needles their lateral motion and to giv'e to both sets of needles proper "reciprocating movements. Furthermore, 1t will be seen that the 'pinion 20 and the rackswith which it meshes cause simultaneously opposite equal movements of; I

plished merely by moving the rod 1 7.- s It will also be seen that the spools on which are wound the selvage warp threads move 'with the set of needles corresponding there-i=1 to so that there; is no substantial change in the path traversed by the selvagewarp threads from the spools as thene'edles move in a vertical direction; 7 Having thus describedmy invention it will be apparent that changes and modil fications may be made therein by those skilled in the art'without departing from the spirit and-scope of the invention and I do not wish tobe limited to the details herein disclosed;

but what I claim-is: Y

'1. In a selvage motion fori the warp substantially -perpendicul'ar to the first plane, and connections between said lever lateral movements.

and the members, said lever causing said members to have relative reciprocating alldjllO 2. 'In selvage motion for the warp threads of a. loom, a pair of 'r'elativelymovable warp controlllng members, a lever, a

support for said lever, said lever being rotatable about the aXis of said support in a plane substantially perpendicular to the axisand being movable in a direction transverse of the 7 plane perpendicular] to the axis of the support, connections between the lever and said members, and means to move said lever angularly about the axis of its support and also angularly in a direction parallel to the plane passing through the support;

3. In a selvage motion 7 threads of a loom, a pair of relatively movable warp controlling members, a cam having for the i warp.

points which are high and low relatively to the axis thereof and having'two portions which are offset with respect to each other-L in a directionparallelto the axis of the cam, andconneotions between said cam,,and the ,members'to cause the latter to havefrelative reciprocating and lateral movements ,as the cam rotates. I a I l 4Q A cam for a loom with selva'geemotion,

' said cam having points which are relatively V v Y hers, one memberhavinga vertical movement high and low with respecttothe axis of the cam and'said camhaving two portions which are otfsetwith respect-to .each othe'rein a direction parallel to the axis ofthecam, the

ofiset portions'being,joined together at the relatively high point of the cam.

5.};aselvage motion for a loom, t me of relatively. movable warpcontrolling mem- 'zfitnd thelother member having a vertical and also a transverse movement, a device between themembersto cause the sameto IIIOYGHlII opposite directions, a cam, and a rigid-con:

f nec-tionbetwe'enone of the members and the cam to give said other member its vertical, andtransversemovement and the firstnamed,

@member tsvert cal movement,

.6. In a iselvage motion forethe nwarp -threads -of a loom, a pair of simultaneously I oppositely-movable controlling members for the warp threads, a rack for each member,

l a pinion meshing with the racks, one of'the members and the racks beingheld against substantial transverse movement, andmeans *to reciprocate the othermember to cause op- 'posite reciprocations of the racksand also cause said other member to 7 move transversely.

' 7. In a selvage motion for the warp lthreads ofia loom, a. pair of simultaneously oppositely movable warp thread "controlling ,members, a rack operatively connected -.to

each member, a pinion meshingwith the racksyone of said members andlthe racks fh aving verticalreciprocating -'movements,

and means to give the other member vertical.-

' *ly' reciprocating movements, and also transverse movements. e

8. In aselvage motion for -looms,;a -pa1r of oppositely reciprocable warp controlling members, geared connections operatively relatedtottheimembers to cause them to have simultaneous opposite movements, a single actuator connected to one member to cause 'omovement of sand member and thereby-effect oppositemovementsof said membersthrough V-the :geared connections,l-said actuator-also efiectiveto cause transversemovement ofone of themembers relativelyto theothermem- 'ber.w. -V ,o m '9. In a selvagejmotion .for the warp 7 threads of a loom, apair of relatively movable warp controlling members,a rotating cam having a rim and spaced dwell faces connectedsitogether.;by an inclined surface,

anodilifting portions on the rim, 2; single lever :to-engage-the cam,.- said portionsbeijng efiecqtiivethrough the ileventoi'cause reciprocating ibers onefwith respect to the other in a direcverse toflthe plane offthe warp threads and 'm v m n srof he lat er infa ir ti trenshe surfacebeing efiectiive'thrbugh the leve V to'cause relative lateral shifting 02 themel lwarp threads,

tion substantially parallel to theplane oi, i

'7 10. a 'selvage motion ior Y Warp' hreads of a loomea pair rofurelatiii e y e'vr able warp controlling members, a i cjafm havingtwo dwell faces spaoed'ir om each-other and connected by an. inclined ,surlfa'cej and a single lever between said cam and the linembers, said inclined surface of the cam'QeEeQt ing a relative lateral movement of the nem bers throughlthe level; Y

I 11.'In va selvage motion for warp I threads of aloom, a'pai'r 0 f rel'at ing a rim and two dwelllfaces fconnectedto m v-b able warp controlling members, a] cam,hav-

each other an'inclined'surfaee, a single lever between said lcamf and the members, said surface of the cam 'eflecting a relative V e tatable aboutthe axis ofsaid support-ma plane substantially perpendicular to the alris of the support and being movable n a direction transverseeof said plane, connectlons between the lever. and saidfmembefiSQfliidE means tof move saidlever angularly about the axis of its support and also angularilyin a direction parallel to the plane" passing through "the support, said means comprising a cam .havinga variable contour to cause;

supportand' having also-a surfaceto cause movement of said lever in a (direction. transverse ofthe.sa d plane,

13.. In a ,selva ge 'mot1on' -for waf x lq threads of a loom, a pair of relativelymov- ,able warp controlling members, connections between themembers to cause the latterto I move in opposite directions, aro-ta-ting element connected to one of the members, said element eflectiveito cause simultaneous oppo sitemovements of the members in a direction transverse of the plane of the-warp threads, said element-also effective to cause re a ive latera m v m n o the membe s in a direction substantially parallelgto'the plane of the warp threads.

Intestimony whereof, I'have hereunto a'ffixedimysignature. or

' ALBERT A. GQRDIQN. Z i

105 movements ofthe lever about, theaxisofthe 

